Improvement



2 Sheets-'Sh'eet1.

G. H. NYE. Improvement in Steam-Vacuum Pumps;

No. 132,731,- Patented Nov. 5,1872.

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2 Sheets--Sheet 2.

G. H. NYE.

Improvemen't in SteamNacuum Pumps.

N0. 132,731. I Patented Nov 5,1872.

GEORGE H. NYE, or Monnonrn, ILLINOIS.

IMPRGVEMENT IN STEAM-VACUUM PUMPS.

Specification forming part of Letters Patent No. 132,731, dated November 5, 1872.

To all whom it may concern:

Be-it known that I, GEORGE H. NYE, of Monmouth, in the county of Warren and State of Illinois, have invented certain Improvements in Automatic Steam Vacuum Pumps, of which the following is a specification:

The nature of my invention relates to improvements in that class of pumps known as steam-vacuum pumps; and theinvention consists in the combination of devices by which motion is communicated to the valves for admitting and cutting off steam 5 and also in the construction of the base or bottom plate of the pump-cylinders with ducts or passages for the water from the water-inlet pipe to the pumpcylinders, from the pump-cylinders to the water-outlet pipe, from the pump-cylinders to the air-dome and to the auxiliary cylinders, all as hereinafter fully described.

. Description of the Accompanying Drawing.

Figure 1 is a perspective view of a machine embodying my invention. Fig. 2 is a top View of the bottom or base. Figs. 3, 4, and 5 are detail views. Fig. 6 is a sectional View of Fig. 2 on the line a: 00.

General Description.

A A are the pump-cylinders, formed in the usual way, with outside metallic casings and wooden linings, the outside casings having exterior annular flanges, by which they are secured to the heads by bolts in the ordinary manner. B is a plate forming the lower heads for the cylinders A A, the base for the support of part of the working devices, and the body for containing the ducts for the passage of water, as hereinafter'more fully described. 0 is the steam-inlet pipe with branches 0 0 leading to the cylinders A A, respectively. D is a rock-shaft with a two-way cock, (I d, on each end, operating in suitable chambers in the vertical parts of the pipes c c, respectively. E E are cranks extending in opposite directions from and at right angles to the rockshat't D, and having vertical slots e e at their outer ends. G is the water-inlet pipe, leading to and connecting at its upper end with the ducts g g, which lead to and enter the bottoms of the cylinders A A, respectively, as shown at Fig. 2 and 6. H H are clack-valves on the entrances of the ducts g g to the cylinders A A, opening upward. I is the wateroutlet pipe. i i are ducts in the plate B leading from the bottoms of the cylinders A A, respectively, to the discharge-pipe I. J J are valves, opening upward, on the entrance of the ducts i i to the water-outlet pipe I. K, Fig. 1, is an air-dome supported on the top of a pipe, k. The lower end of the pipe 70 is enlarged, as shown at Figs.2 and 6, for the purposes hereafter described. L L are ducts leading from the interior of the cylinders A A into the enlarged lower end of the pipe k, and provided with upwardly-opening valves ii on their entrances to the pipe k. M M are also ducts leading, respectively, from the bottoms of the cylinders A A to the lower end of the pipe k. The ducts MM are much smaller than the ducts L L, and have no valves, but have each a short pipe, m m, extending upward from their entrance to the cylinders A A. N N are the auxiliary cylinders, supported on pipes n n, which pipes n n connect at their lower ends with ducts P P leading, respectively, to the interior of the cylinders A A. R R are diaphragms of rubber or other suit-able material, dividing each cylinder N N into an upper and lower compartment, Figs. 3, 4, and 5. S S are connecting-rods, their lower ends attached respectively to the diaphragm's R R, as shown at Figs. 3, 4, and 5, and their upper ends having loops 8 s, which engage with pins V V within the slots e e in the cranks E E. The ducts in the plate B are shown at Fig. 2 by dotted lines.

The operation of my invention is as follows: The crank E being elevated, as shown at Fig. 3, and the crank E at the same time depressed, the two-way cock in the pipe 0 will be turned to admit steam to the cylinder A, and the two-way cock in the pipe 0 at the same time be turned to close the passage of steam to the cylinder A. The pump now being supposed to be in operation and the cylinder A full of water, the steam entering at pipe 0 will force.

the water therein through the duct i, raising the valve J, and discharging it through the pipe I, at the same time forcing a portion of water through the duct L and valve 1 up into andcompressing air in the air-dome K, and also at the same time forcing a portion of water through the duct P and pipe n into the lower part of the auxiliary cylinder N, holding thereby the diaphragm E, and with it the rod S, in the elevated position shown at same Fig. 3. WVhen the water is all discharged from the cylinder A, and a portion of the steam therein comes beneath the water in the discharge-pipe I, it will condense sufficiently to change the pressure against the lower side of the diaphragm It, so that the pressure of the atmosphere on its upper side will press it down and bring down with it the rod S and crank E to the position shown at Fig. 4, thereby closing the passage for steam through the pipe 0. The slight condensation of steam last described will also leave the pressure of the compressed air in the air-dome K greater than the pressure of steam below it, allowing the compressed air therein to force down the water in the pipe 7s, closing the Valve 1. and forcing a small stream through the duct M and pipe m up into the body of the steam in cylinder A, thereby condensing the same and forming a vacuum which the water will rush to supply through the inlet-pipe G and duct 9, raising the valve H. When the cylinder A is filling or about full, the force of the water acquired by momentum, passing through the duct P into the auxiliary cylinder N, will raise the diaphragm R, and with it the rod S, to the position shown at Fig. 5, in which position it will be held until again brought down, as hereinbefore described, the crank E being brought up to the upper end of the looprod S before therod drops by the depression of the rod S, caused by condensation of a portion of the steam in the cylinder A, as hereinbefore described for the cylinder A, thus making the operation automatic, the cylinders A.

A filling and discharging alternately. The rods S S may have pistons on their lower ends instead of the diaphragms R, and springs may be used to assist in depressing them.

Claims.

Vvitnesses:

PLATT R. Rronanns, M. H. BARRINGER. 

